Mounting fob sewing-machine motors



Aug 12 1924. 1,504,615

G. H. GARCELON ET AL MOUNTING FOR SEWING MACHINE MOTORS Filed Dec. 14 1918 2 Sheets-Sheet 1 INVENTORS Glen/ye l7. fierce/0r? IV/e/s Halve/7 WITNESSES:

O Q i I BY ATT'QRNEY- 12, 1924. 1,504,615 G. H. GARCELON ET AL MOUNTING FOR SEWING MACHINE MOTORS Filed Dec. 14 1918 2 Sheets-Sheet 2 m .ESSES: INVENTORS 4 ,l I 1 George IZGWce/Qn. fly W A/ie/s Hansen ATTORNEY Patented Aug. 12, 1924.

UNITED STATES OF F ICE.

PATENT GEORGE E. GARCEL ON, OF SWISSVALE, AND NIELS HANSEN, OF 'WILKINSBURG, PENN- SYLVANIA, ASSIGNORS TO WESTINGHOUSE ELEGTRIO AND MANUFACTURING COM- PANY, A CORPORATION OF PENNSYLVANIA.

MOUNTING FOR SEWING-MACHINE MOTORS.

Application filed. December 14, 1918. Serial No. 266,702.

To all whom it may concern:

Be it known that we, GEORGE H. GAlion- LON, a citizen of the United States, and a resident of Swissvale, in the county of Allegheny and State of Pennsylvania, and

NInLs HANsnN, a subject of the King of as sewing machines, that are equipped for operation by electric motors, and it has for its object to provide a structure wherein the machine and the motor are united in a novel manner to form a strong, rugged, compact and inexpensive combination.

Heretofore, it has been customary to drive a sewing machine by means of a motor so disposed upon the machine table as to engage the hand wheel or by fastening a motor to the sewing machine frame by means of a complicated and expensive supporting structure.

By our invention, we provide a structure wherein the motor is mounted directly on the sewing machine head by means of a.

bayonet oint, thus eliminating the complicated support and ensuring that the drive pinion shall always beheld in its proper position with respect to the hand wheel of the machine.

For a further under-standing of our invention, reference may be had to the accompanying drawings in which Fig. 1 is a side elevational view of a portion of a sewing machine provided with a motor mounted thereon in accordance with our invention; Fig. 2 is a side'elevational view of a portion of a sewing machine head showing a portion of the motor mounting means; Fig. 3

" is a side elevational View showing the base l 5 is an elevational view illustrating the motor only.

In the drawings, a sewing machine head 1 is shown as provided with the usual shaft 3 and hand-wheel 2. The head 1 is provided also with a circular opening at having inwardly projecting spaced lugs 5. An 8166-.

tric motor 6 is provided with an annular fiat base member 7 having spaced lugs 8 which coact with the lugs 5 to constitute a bayonet-joint for holding the motor in its operative position.

It is not practicable to cast or machine the surface of the base 7 and the lugs 8 with sufficient accuracy to have the motor rigidly mounted and still have the bayonet joint sufliciently loose topermit satisfactory rotative adjustment of the motor. Therefore, a clearance is allowed between these members which is taken up by a spring. member 9 attached to the frame of the motor 6 and having ends 10 and 11 which engage the lugs 5 and draw the base 7 into close engagement with the machine head. The motor shaft 13 is provided with a drive pinion 12 to engage the hand wheel 2. The drive pinion 12 is held in resilient engagement with the hand wheel 2 by means of a spring 14 that is interposed between a seat 15 in the sewing-machine head and a lug 16 upon the motor base 7, thus tending to rotate the entire motor structure about the axis 19 of the circular opening i.-

In attaching the motor to the sewing machine head, the hand wheel 2 is removed,

the base portion 7 of the motor is presented to the annular opening 4: in such manner that the lugs 8 are passed between the lugs 5 of the sewing machine head, after which the motor is turned in the direction shown by the arrow 18 against the act-ion of the spring 14:, until the drive pinion 12is below the normal outer periphery of the hand wheel 2, which can then be replaced upon the shaft 3. The base member 7 bears such relation to the motor 6, as a whole, that the axis 19 is located in approximately the center of gravity thereof, thus reducing the vibration of the motor and also reducing the task imposed upon the spring 14 which serves to hold the pinion 12 in frictional driving engagement with the hand wheel 2. lVhile we have shown but one form of our invention, and applied to but a single type of power-operated machine, it will be obvious to those skilled in the art that it is not so limited but is susceptible of various minor modifications without departing from the spirit thereof and we desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are specifically set forth in the appended claims.

We claim as our invention:

1. A machine comprising a head, a drive shaft having a hand wheel, an electric motor provided with a drive pinion and detachably mounted on said head and a resilient means serving to rotatively bias said motor around an axis perpendicular to said head and said drive pinion and passing substantially through the center of gravity of the motor to hold said pinion in driving engagement with said hand wheel.

2. A sewing machine comprising a head having a shaft and a hand wheel mounted thereon and provided with an element of a bayonet joint, an electric motor adapted to be mounted thereon and provided with a cooperating bayonet-joint element, and means for operatively connecting said motor to said hand-wheel.

3. An electrically driven sewing machine comprising a tubular sewing machine head having an opening therein, a longitudinally extending main shaft, a drive wheel fixed on said shaft, an electric motor having its armature shaftdisposed substantially parallel to said main shaft and provided with a pinion to engage said drive wheel, said motor being peripherally supported in said opening for rotative movement around an axis perpendicularly related to the armature shaft to effect engagement of the. pinion with the drive wheel.

t. An electrically driven sewing machine comprising a tubular sewing machine head having an opening therein, a drive shaft j o-urnaled therein, a drive wheel fixed on the drive shaft, an electric motor having an armature shaft substantially parallel to the drive shaft and peripherally supported in said opening for rotative adjustment around an axis perpendicularly related to said armature shaft, a pinion fixed to the armature shaft to make frictional engagement with said drive Wheel, and means for resiliently imparting a rotative bias to said motor to maintain engagement of said pinion with said drive wheel.

5. A sewing machine comprising a head, a drive shaft having a hand wheel, an electric motor provided with a drive pinion and detachably mounted upon said head for rotative adjustment around an axis perpendicular to said head and said pinion and passing through the main body portion of the motor, and means for moving said motor upon said axis to effect operative engagement of said pinion with said hand wheel.

6. A sewing machine comprising a head having a shaft and a hand wheel mounted thereon and provided with one element of a bayonet-joint, an electric motor provided with a drive pinion to engage said hand having a hand wheel and provided with a side opening, an electric motor mounted in proximity to said opening and having projectionsthat effect supporting engagement with the wall thereof and provided with a drive pinion and means for holding said drive pinion in resilient engagement with said hand wheel.

8. A sewing machine comprising a head having a hand wheel and provided with a side opening having lugs projecting thereinto, an electric motor provided with a drive pinion and having lugs adapted to coact with said first-mentioned lugs to hold said motor in position, and means for holding said drive pinion in resilient engagement with said hand wheel.

9. A sewing machine comprising a head having a hand wheel and provided with a circular side opening having symmetrically disposed lugs projecting thereinto, an electric motor provided with a drive pinion and mounted on said head by means: of a circular base portion fitted over said opening and provided with lugs which coact with said first-named lugs, and a spring interposed between said head and said motor to hold said drive pinion in engagement with said hand wheel.

10. A sewing machine comprising a head having a shaft and a hand wheel mounted thereon and provided with one element of a bayonet-joint, an electric motor having a drive pinion to engage said hand wheel and provided with a bayonet-joint element to engage the element on said head, and means for holding said drive pinion in resilient engagement with said hand wheel, the axis of said co-operating bayonet-joint elements extending through approximately the center of gravity of the motor.

ll. A sewing machine comprising a head having a hand wheel, a rotatively adjustable electric motor provided with a drive pinion and means for holding said drive pinion in resilient engagement with said hand wheel, the pivotal axis of the connection between the motor and the head extending approximately through the center of gravity of said motor.

12. A machine comprising a head provided with an opening having inwardly projecting lugs, an electric motor mounted adjacentto said opening, and resilient means interposed between said motor and said lugs to hold said motor in position.

13. A machine comprising a head provided with an opening having inwardly projecting lugs, an electric motor mounted adjacent to said opening, and a leaf spring having its intermediate portion attache-d to said motor and having its ends adapted to coact with said lugs to hold said motor in position.

14. A sewing machine comprising a head provided with a hand Wheel and having an opening provided with inwardly projecting lugs, an electric motor provided with a drive pinion and having lugs adapted to coact with said first-mentioned lugs to hold said motor in position, and resilient means interposed between said motor and said machine head to further aid in positioning said motor, and means for holding said drive pinion and said hand wheel in resilient engagement. H

15. A sewing machine comprising a head having a side recess and a rotatively adjustable electric motor operatively connected externally to said machine and having an attaching means projecting into said recess.

16. A sewing machine comprising a head having a side recess and provided with a shaft having a hand wheel, and an electric motor having an attaching means within said recess and externally geared to said hand wheel.

17. A sewing machine comprising a head having a side recess and a rotatively adjustable electric motor having an attaching means to engage said recess.

18. A sewing machine comprising a head having a side recess and an electric motor having a yielding attaching means to engage said recess.

19. A sewing machine comprising a head provided with one element of a bayonet joint, and an electric motor adapted to be mounted thereon and provided with a cooperating bayonetjoint element.

20. A machine comprising an operating mechanism, an enclosing casing therefor having spaced lugs and a rotatively adjustable electric motor for driving said mechanism, said motor having a supporting means to engage said lugs.

21. A machine comprising a shaft, an enclosing casing therefor provided with spaced lugs, a driving member for said shaft mounted externally of said casing, and an electric motor having means to engage said lugs and being externally geared to said driving member.

In testimony whereof, we have hereunto subscribed, our names this 30th day of N ov., 1918.

GEORGE H. GARCELON. NIELS HANSEN. 

